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/*******************************************************************************
* Copyright (c) 2010-2016, Grill Balázs, IncQuery Labs Ltd.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.matchers.context;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
/**
* Common abstract class for implementers of {@link IQueryMetaContext}
*
* @author Grill Balázs
* @since 1.3
*
*/
public abstract class AbstractQueryMetaContext implements IQueryMetaContext {
/**
* @since 2.0
*/
@Override
public Map<InputKeyImplication, Set<InputKeyImplication>> getConditionalImplications(IInputKey implyingKey) {
return new HashMap<>();
}
/**
* @since 1.6
*/
@Override
public boolean canLeadOutOfScope(IInputKey key) {
return key.getArity() > 1;
}
/**
* @since 1.6
*/
@Override
public Comparator<IInputKey> getSuggestedEliminationOrdering() {
return (o1, o2) -> 0;
}
/**
* @since 1.6
*/
@Override
public Collection<InputKeyImplication> getWeakenedAlternatives(IInputKey implyingKey) {
return Collections.emptySet();
}
@Override
public boolean isPosetKey(IInputKey key) {
return false;
}
@Override
public IPosetComparator getPosetComparator(Iterable<IInputKey> key) {
return null;
}
}
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